Compatibility: The universal garage door remote control is compatible with most brands of garage door remote control devices (including for Liftmaster, Chamberlain and Craftsman) produced since 1993. Compatible with 3 different frequencies of security rolling code Safety and reliability: The lift remote control is equipped with the latest Security+2.0 rolling coding technology, which almost eliminates radio interference. Rolling code prevents intruders by generating a security code each time the remote control on the garage door remote control is used Easy to carry and program: The elevator master key chain remote control is very small and can be placed in a pocket, handbag or key chain. With detailed instructions, you can complete the setup in a few minutes. Note: Before starting remote programming, make sure that the garage door opener is completely off Remote control range: The working distance of the garage door remote control we replaced is 120 feet, allowing you to open the garage door from a distance. Wider remote control range and stronger signal transmission 3-button design: The 3-button remote control transmitter can control up to three garage door openers, door operators or MyQ light accessories, helping you reduce the burden of carrying multiple remote controls Colour:black Material:plastic Package Contents: 2 x garage door opener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.